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# System prepended metadata

title: Different Type Quantum Architecture

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# Different Type Quantum Architecture
## Superconducting Loops:
- A resistance free current oscillates back and forth around a circuit loop. An injected microwve signal excites the current into super-position states.
- **Company Support:** Google , IBM , Quantum Circuit.
- **Qubits Available:**
- **Pros:**
  - Fast.
  - Built on existing semiconductor industry
- **Cons:**
  - Collapse easily
  - Extremely low temp required to work 

## Trapped Ion:
- Electrically charged atom or ions, have quantum energies that depend on the location of the electron.Tuned laser cool and trap the ions and put them in superposition states.
- **Company Support:** ionQ
- **Pros:**
  - Highly stable
  - Can achieve high gate fidelities.
- **Cons:** 
  - Operation is slow.
  - Many lasers are recquired for operation

## Silicon Quantum Dots
- These *artificial atom* are made by adding an electron to a small piece of pure silicon.Microwave control the electrons quantum states.
- **Company Support:** Intel
- **Pros:**
    - Stable
    - Build on existing semiconductor industry
- **Cons:**
  - Entanglement is limited(Few in number).
  - Low temp is recquired for operation. 
 
## Topological Qubits:
- Quasiparticles can be seen in behaviour of electrons channeled through semi-conductor structures.Their braided path can encode quantum imformation.
- **Company Support:** Microsoft,Bell Labs
- **Pros:**
  - Greatly reduce error.
- **Cons:**
  - Still a very theoretical concept.

## Diamond Vaccancies:
- A nitrogen atom and a vaccancy add an electron to a diamond lattice. Its quantum spin state , along with those of nearby carbon nuclei , can be controlled with light.
- **Company Support:** Quantum Diamond Technologies
- **Pros:**
  - Can be operated at room temp.
- **Cons:**
  - Entanglement is hard to achieve. 

## Neutral Atom
- Neutral atoms like ions store qubits within electronic state interaction through excitation to Ryberg State.
- **Company Support:** Atom Computing,QuEra
- **Pros:**
  - The number of possible qubits is more.
  - Both 2D and 3D Topography possible.
- **Cons:**
  -  Lasers are recquired.
  -  The physics is not well understood.
  -  Some atoms(used for computation) cn escape over time.
 
 ## Photonics
 - Photonic Qubits interact via linear elements , using photons as a elementary particle for interaction.
- **Company Support:** Xanadu , PsiCorp
- **Pros:**
  - Linear optical gates can be integrated on-chip. 
  - Capable of being scaled to much higher degree over time.
- **Cons:**
  - No way of implementing memory to store information.
  - Photon loss.